| ID (ISN) del documento | 25217 |
| Número CIS |
76-1030 |
| ISSN - Título de la serie |
Metal Construction |
| Año |
1975 |
| Número de serie |
|
| Autor(es) |
Douglas C.P., Plummer R.M. |
| Título |
Welding fume threshold limit values. |
| Información bibliográfica |
Sep. 1975, Vol.7, No.9, p.465-471. Illus. 3 ref. |
| Resumen |
The gases and fumes produced by welding in shipbuilding and repairing environments are discussed. The USA threshold or ceiling values are compared with the concentrations at operators' breathing zone levels: carbon monoxide (TLV 50ppm) 2-20ppm, nitrous fumes (no TLV) 2-8ppm, nitrogen dioxide (CLV 5ppm) trace:1ppm, iron oxide (TLV 10mg/m3) 2.7-17.2mg/m3, copper (no TLV) 0.05-0.25mg/m3, and zinc oxide (no TLV) 2.4-6.4mg/m3. Ventilation by high pressure fans and ducting with flexible polyvinyl chloride tubes were chosen and the cost of local exhaust ventilation for a worker was calculated as £90.00 per year. Factors in successful checking of the ventilation performance are also given. |
| Descriptores (primarios) |
valores umbrales; aspiración localizada; soldadura y corte; construcción naval; humos de soldadura |
| Descriptores (secundarios) |
plata; monóxido de nitrógeno; manganeso; hierro; níquel; dióxido de nitrógeno; óxido de carbono; dióxido de carbono; cobre; óxido de zinc; plomo; berilio; ozono; ácido fluorhídrico; fluoruros; conductos; trabajo en espacio confinado; soldadura y corte con arco; aspectos económicos; ventilación; dióxido de azufre; cadmio; vanadio; cromo; muestreo individual |
| Tipo de documento |
- |
| Tema(s) |
Sustancias tóxicas y peligrosas
|
| Broad subject area(s) |
|
| Navegación por categoria(s) |
Welding and cutting
Ventilation
Occupational exposure limits
Shipbuliding and ship repair
|
